The Herat Citadel, also known as the Citadel of Herat or Ark of Herat, is a historic fortress located in the city of Herat, Afghanistan. It dates back to the 5th century and has been rebuilt and renovated multiple times throughout its history. The citadel features impressive mud-brick architecture and has served various purposes, including military defense and royal residence. In 2005, the Herat Citadel was designated a UNESCO World Heritage Site, highlighting its cultural significance. The site is a popular tourist attraction, offering visitors a glimpse into Afghanistan's rich history and architectural heritage. Today, restoration efforts continue to preserve this important landmark.